CN105134093B - Interior circulation is incubated oil pick-up tube - Google Patents
Interior circulation is incubated oil pick-up tube Download PDFInfo
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- CN105134093B CN105134093B CN201510544676.1A CN201510544676A CN105134093B CN 105134093 B CN105134093 B CN 105134093B CN 201510544676 A CN201510544676 A CN 201510544676A CN 105134093 B CN105134093 B CN 105134093B
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- landing nipple
- joint
- insulating
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Abstract
Oil pick-up tube is incubated the present invention relates to a kind of interior circulation（Or sucker rod）, including the hollow oil pumping tube body with joint, box cupling, and installed in the intrinsic insulating tube of hollow oil pick-up tube, therebetween provided with annular space chamber；Wherein：It is double-decked insulation in the middle of insulating tube, two ends are respectively equipped with righting joint and landing nipple；The double-layer heat insulation sealing structure of insulating tube is that annular space is left between inner tube and outer tube；Righting joint is axially arranged with flow path groove, and righting coupler bore coordinates with inner tube extension, formed inner tube sealing, external diameter and hollow oil pick-up tube inner hole, can slide；Landing nipple is axially arranged with flow path groove, landing nipple is tightly connected with outer tube, landing nipple endoporus constitutes with inner tube extension and is slidingly sealed cooperation, and chamfering composition is spacing on the inside of landing nipple and in hollow oil-well tubing collar coordinates, and fastening is connected with coupling inner thread by pressure cap.The present invention is rational in infrastructure, and high insulating effect, service life is long, and by testing indoors and field application, heavy oil wells can save the electricity charge 70%, defect present in prior art is solved well.
Description
Technical field
The present invention relates to technical field of oil extraction equipment, more particularly to it is a kind of be used for viscosity reduction in oilfield exploitation, Wax proofing it is interior
Circulation insulation oil pick-up tube or sucker rod.
Background technology
During thickened oil recovery, because recovery process Central Plains oil viscosity is larger and easy wax deposition, crude oil is largely effected on
Yield.Current hollow oil pick-up tube（Bar）Heating technique has plug-in type and continuous stainless steel tube, and two kinds connect structure and there is shortcoming：
(1) there is leak source in plug-in type, influence heat insulation effect.(2) continuous stainless steel tube poor thermal insulation property.
Chinese patent discloses one kind《Oil extraction in oil field Special vacuum heat preserving circle tube》（Authorization Notice No. CN10270486
7B）.Due to the patent, there are the following problems, causes it to be difficult to carry out.
(1) the patent figure due to inner tube, outer tube and the pin end at two ends, box thread joint can only using Type of Welding connection
Connect, when there is the larger temperature difference between inner and outer pipes, its deflection is different, disengages weld seam, and can not realize vacuumizing effect.
(2) vacuum heat-preserving tube of the patent with hollow outer tube when installing, male thread of the vacuum heat-preserving tube from hollow outer tube
End is penetrated, and then vacuum heat-preserving tube is fastened in hollow outer tube with nut, makes boss on the inside of the pin end in vacuum heat-preserving tube
It is in close contact with the shoulder in hollow outer tube male thread end, shoulder is in close contact with nut end face in hollow outer tube box thread.When
When under interior circulation vacuum tube in well, hollow outer tube is stretched by Action of Gravity Field, and vacuum heat-preserving tube also causes weld seam therewith stretching
Cracking, vacuum heat-preserving tube failure.
(3) service life can only typically be maintained 3-4 months vacuum tube at high temperature, can not meet the need of oil well long-term production
Will.
The content of the invention
The purpose of the present invention is that there is provided a kind of rational in infrastructure, high insulating effect, service life for the defect of above technology
Long Extendible interior circulation insulation oil pick-up tube.
Technical scheme：
A kind of interior circulation is incubated oil pick-up tube, including the hollow oil pumping tube body with joint, box cupling, and is taken out installed in hollow
The intrinsic insulating tube of oil pipe, therebetween provided with annular space chamber；Wherein：It is double-decked insulation, two ends difference in the middle of insulating tube
Provided with righting joint and landing nipple；The double-layer heat insulation sealing structure of insulating tube is that annular space is left between inner tube and outer tube；Righting
Joint is provided with extension diameter section, and the extension diameter section is axially arranged with flow path groove, the ring between flow path groove and hollow oil pumping tube body and insulating tube
Cavity insertion；Righting joint uses fixed seal connection with inner and outer pipe, and extension diameter section is slidably matched with hollow oil pumping pipe orifice；
Righting joint constitutes grafting sealing by seal with inner tube extension and coordinated；Landing nipple and outer tube fixed seal connection, it is fixed
Position inner nosepiece wall, which sets seal and constituted with inner tube extension, is slidingly sealed cooperation；Landing nipple is provided with overstriking section, the overstriking
Section constitutes spacing cooperation with chamfering inside hollow oil-well tubing collar, and overstriking section leads to provided with the through hole with insulating tube annular space insertion
Hole is sealed by plug, and overstriking section is additionally provided with shaft orientation flowing channel groove, and the annular space chamber of flow path groove and hollow oil pumping pipe orifice and insulating tube is passed through
It is logical；The overstriking section outer end is connected fastening with coupling inner thread with the spacing cooperation of pressure cap, pressure cap.
Such scheme further comprises：Insulation material is filled in the annular space left between inner tube and outer tube and hydrogen agent is inhaled,
And full of inert gas.
Vacuum is set in the annular space that can also be left between inner tube and outer tube.
The internal thread of the hollow oil pumping tube body female joint section is longer than standard oil pick-up tube internal thread；Described insulating tube
Outer tube is with righting joint and landing nipple using welding, and inner tube one end and the righting weld of insulating tube, the other end pass through
Landing nipple endoporus simultaneously extends certain length.
The present invention insulation oil pick-up tube by adopting the above-described technical solution, thus have the characteristics that：
One is that the two ends of insulating tube are respectively equipped with righting joint and landing nipple, and centre is double-decked insulation, insulating tube
Inner tube on set insulation material, insulation material is not filled by full space, and the outer tube being allowed to insulating tube has certain annular space, and annular space adds
There is suction hydrogen agent and full of inert gas, extend insulating tube service life.
Two be that the two ends coupler bore of insulating tube is equipped with sealing ring, the extension diameter section and landing nipple overstriking section of righting joint
Cylindrical to open flow path groove, righting joint slotted section is slidably matched with the formation of hollow rod endoporus, makes end placed in the middle, be easy to operation
Install.
Three be that the outer tube of insulating tube and righting joint and landing nipple use welding, inner tube one end of insulating tube and righting
Weld, the other end is through landing nipple endoporus and stretches out certain length on the outside of landing nipple, is sealed with landing nipple endoporus
Circle forms sealing, prevents medium from entering insulating tube annular space, and influences heat insulation effect, and extension insertion righting when deployed connects
Head endoporus, is sealed with the formation of endoporus sealing ring.Because insulating tube inner tube one end is in free state without being produced by the inner and outer pipes temperature difference
The influence of raw stress, weld seam is reliable.When insulating tube is arranged in hollow oil pick-up tube, coupling inner thread end is compressed by pressure cap, outside
The end of thread is in free state, and when being stretched in the hollow stem course of work by gravity, insulating tube is not by pulling force, reliable operation.
Four be hollow rod internal thread it is longer than standard hollow rod internal thread, be easily installed pressure cap.
The present invention is rational in infrastructure, and high insulating effect, service life is long, good with field test results by testing indoors,
Solve defect present in prior art well.
Brief description of the drawings
Fig. 1 is the structural representation that interior circulation is incubated oil pick-up tube；
Fig. 2 is the structural representation of insulating tube 3 in Fig. 1；
Fig. 3 is the structural representation of hollow oil pick-up tube 2 in Fig. 1；
In figure：1st, outside seal（Circle）, 2, hollow oil pumping tube body, 3, insulating tube, 4, pressure cap, 5, righting joint, 6, close
Sealing（Circle）, 7, outer tube, 8, insulation material, 9, inner tube, 10, inhale hydrogen agent, 11, plug, 12, seal（Circle）, 13, positioning connect
Head, 14, internal thread.
Embodiment
Referring to the drawings 1,2 and 3, a kind of interior circulation is incubated oil pick-up tube, including the hollow oil pumping tube body with joint, box cupling
2, and the insulating tube 3 in hollow oil pumping tube body 2, therebetween provided with annular space chamber；Wherein：It is double in the middle of insulating tube 3
Layer insulation construction, two ends are respectively equipped with righting joint 5 and landing nipple 13；The double-layer heat insulation sealing structure of insulating tube 3 is inner tube 9
Annular space is left between outer tube 7；Righting joint 5 is provided with extension diameter section, and the extension diameter section is axially arranged with flow path groove, and flow path groove is taken out with hollow
Annular space chamber insertion between oil pipe body 2 and insulating tube 3；Righting joint 5 uses fixed seal connection with inner and outer pipe, expanding
Section is slidably matched with the hollow oil pumping endoporus of tube body 2；Righting joint 5 constitutes grafting by seal 6 with inner tube extension and sealed
Coordinate；Landing nipple 13 and the fixed seal connection of outer tube 7, the endoporus of landing nipple 13 set seal 12 and with the extension of inner tube 9
Composition is slidingly sealed cooperation；Landing nipple 13 is provided with overstriking section, and the overstriking section is limited with hollow oil pumping tube body 2 box cupling Inner Constitution
Position coordinates, and overstriking section is sealed provided with the through hole with insulating tube annular space insertion, through hole by plug 11, and overstriking section is additionally provided with axial stream
Road groove, the annular space chamber insertion of flow path groove and hollow oil pumping tube body 2 and insulating tube 3；The overstriking section outer end with pressure cap 4 is spacing matches somebody with somebody
Close, pressure cap 4 is connected cooperation with coupling inner thread.
Above-described embodiment further comprises：Insulation material 7 is filled in the annular space left between inner tube 9 and outer tube 7 and is inhaled
Hydrogen agent 10, and full of inert gas.
Vacuum is set in the annular space that can also be left between inner tube and outer tube.
The internal thread 14 of the hollow oil pumping tube body 2 female joint section is longer than standard oil pick-up tube internal thread；Outside insulating tube
Pipe 7 is with righting joint 5 and landing nipple 13 using welding, and the one end of inner tube 9 and the righting joint 5 of insulating tube are welded.
The design feature of the present invention is embodied in：
(1) insulating tube two ends set righting joint 5 and landing nipple 13, and coupler bore sets inner seal ring 6 and sealing ring 12, outside
The two ends of pipe 7 are welded with righting joint 5 and landing nipple 13 respectively, and the one end of inner tube 9 is welded with righting joint 5, and the other end is passed through
Landing nipple 13 simultaneously stretches out outer end.
(2) inner tube 9 and landing nipple inner seal ring 12 formation is sealed, and prevents annular space that medium enters between inner and outer pipes and shadow
Ring heat-insulating property.
(3) one end of inner tube 9 is welded with righting joint 5, and the other end is in free state, when inner and outer pipes because the temperature difference is flexible
When, be not affected by force drawing crack weld seam.
(4) external diameter of inner tube 9 sets annular space between insulation material 8, the unfilled inner and outer pipes of insulation material 8, and annular space adds necessarily
Amount inhales hydrogen agent 10 and full of inert gas, to increase heat-insulating property, increases the service life.
(5) extension diameter section of righting joint 5 opens flow path groove, and it coordinates with the formation of the hollow endoporus of oil pick-up tube tip side 2, and righting connects
First 5 just can be placed in the middle, and inner tube external part insertion when mounted is without damaging inner seal ring 6.
(6) external diameter of landing nipple 13 opens flow path groove, and outer end coordinates with pressure cap 4 is fixed on hollow oil pick-up tube 2 by insulating tube
It is interior.Through hole is set on the muscle of flow path groove, and is sealed by plug 11.
(7) coupling inner thread 14 of hollow oil pick-up tube 2 is easily installed pressure cap 4 to lengthen screw thread.
（8）Insulating tube 2 loads from hollow oil-well tubing collar end, is compressed with pressure cap 4, and righting joint 5 is in free state, when
When hollow oil pick-up tube 2 is stretched by gravity, insulating tube makes weld seam sealed reliable not by pulling force.
Claims (4)
1. a kind of interior circulation is incubated oil pick-up tube, including the hollow oil pumping tube body with joint, box cupling, and installed in hollow oil pumping
Insulating tube in tube body, therebetween provided with annular space chamber；It is characterized in that：It is double-decked insulation, two ends in the middle of insulating tube
It is respectively equipped with righting joint and landing nipple；The double-layer heat insulation sealing structure of insulating tube is that annular space is left between inner tube and outer tube；
Righting coupler bore sets sealing ring, and righting joint external diameter is provided with extension diameter section, and the extension diameter section is axially arranged with flow path groove, flow path groove and sky
The annular space chamber insertion that the heart is pumped between pipe orifice and insulating tube；Righting joint uses fixed seal connection, righting with inner and outer pipe
Joint extension diameter section is slidably matched with hollow oil pumping pipe orifice；Righting joint constitutes grafting by seal with inner tube extension and sealed
Coordinate；Landing nipple and outer tube fixed seal connection, landing nipple inwall set seal and constituted with inner tube extension and slided
Sealing coordinates；Landing nipple is provided with overstriking section, the overstriking section and the spacing cooperation of hollow oil-well tubing collar Inner Constitution grafting, overstriking
Section is sealed provided with through hole with insulating tube annular space insertion, through hole by plug, and overstriking section is additionally provided with shaft orientation flowing channel groove, flow path groove with
The annular space chamber insertion of hollow oil pumping pipe orifice and insulating tube；Taken out with the spacing cooperation of pressure cap, pressure cap with hollow the overstriking section outer end
The connection of tubing coupling inner thread coordinates.
2. interior circulation according to claim 1 is incubated oil pick-up tube, it is characterised in that：The ring left between inner tube and outer tube
Filling insulation material and suction hydrogen agent in empty, and full of inert gas.
3. interior circulation according to claim 1 is incubated oil pick-up tube, it is characterised in that：The ring left between inner tube and outer tube
It is vacuum in empty.
4. the interior circulation insulation oil pick-up tube according to claim 1 or 2,3, it is characterised in that：The sheet of the hollow oil pick-up tube
The internal thread of body female joint section is longer than standard oil pick-up tube internal thread；The outer tube of described insulating tube and righting joint and landing nipple
Using welding, inner tube one end and the righting weld of insulating tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510544676.1A CN105134093B (en) | 2015-08-31 | 2015-08-31 | Interior circulation is incubated oil pick-up tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510544676.1A CN105134093B (en) | 2015-08-31 | 2015-08-31 | Interior circulation is incubated oil pick-up tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105134093A CN105134093A (en) | 2015-12-09 |
| CN105134093B true CN105134093B (en) | 2017-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510544676.1A Active CN105134093B (en) | 2015-08-31 | 2015-08-31 | Interior circulation is incubated oil pick-up tube |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382435A (en) * | 2020-10-21 | 2022-04-22 | 中国海洋石油集团有限公司 | Hot washing pipe column of internal circulation heat preservation pipe of offshore oilfield and use method of hot washing pipe column |
| CN113236142A (en) * | 2021-03-03 | 2021-08-10 | 沧州润涛石油设备有限公司 | Double-layer vacuum insulation pipe, sucker rod and assembly process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204941369U (en) * | 2015-08-31 | 2016-01-06 | 东营新佳环保技术开发有限公司 | Inner eycle insulation oil pick-up tube |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4145034A (en) * | 1978-03-16 | 1979-03-20 | Hughes Tool Company | Heat shield for a drill string shock absorbing apparatus |
| CN201428388Y (en) * | 2009-06-18 | 2010-03-24 | 山东创佳石油机械制造有限公司 | Vacuumized continuous tube |
| CN101942971B (en) * | 2010-09-04 | 2014-03-26 | 李永祥 | Elastic expansion device |
| CN102704867B (en) * | 2012-06-08 | 2015-01-21 | 山东创佳石油机械制造有限公司 | Vacuum heat-preservation circulating pipe special for oil production of oilfield |
| KR20140069500A (en) * | 2012-11-29 | 2014-06-10 | 대우조선해양 주식회사 | Apparatus for avoiding collision of risers and riser having the same |
| CN204371114U (en) * | 2014-12-22 | 2015-06-03 | 中船勘察设计研究院有限公司 | Floating sleeve pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204941369U (en) * | 2015-08-31 | 2016-01-06 | 东营新佳环保技术开发有限公司 | Inner eycle insulation oil pick-up tube |
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| TR01 | Transfer of patent right |
Effective date of registration: 20190522 Address after: 257091 Dongying District Shengli Economic Development Zone, Dongying City, Shandong Province Co-patentee after: DONGYING XINJIA ENVIRONMENTAL TECHNOLOGY DEVELOPMENT CO., LTD. Patentee after: Shandong Heng Chi Petroleum Equipment Co., Ltd. Address before: 257 000 Xishou, Weifang Road, Dongying City, Shandong Province Patentee before: DONGYING XINJIA ENVIRONMENTAL TECHNOLOGY DEVELOPMENT CO., LTD. |
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Effective date of registration: 20190805 Address after: 257091 East of West Fourth Road, Niuzhuang Town, Dongying District, Shandong Province (No. 384 Chuangyou Road, Dongying Oilfield Fusion Industrial Park) Patentee after: DONGYING XINJIA ENVIRONMENTAL TECHNOLOGY DEVELOPMENT CO., LTD. Address before: 257091 Dongying District Shengli Economic Development Zone, Dongying City, Shandong Province Co-patentee before: DONGYING XINJIA ENVIRONMENTAL TECHNOLOGY DEVELOPMENT CO., LTD. Patentee before: Shandong Heng Chi Petroleum Equipment Co., Ltd. |
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| TR01 | Transfer of patent right |